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Configure Branch
8-233980-A2-GB30-20 November 1996
Dial Line
The Dial Line configuration options are used to
configure the modem for operation over dial lines.
Table 8-4 shows each Dial Line configuration option as
it appears on the LCD, with the Async Dial factory default
setting (the default value if the modem is just being
installed) shown following the colon (:) on the first line
and with all available selections listed on the second line.
Following this is a description of the configuration option,
a description of the available selections, and any
equivalent A
T commands.
Table 8-4
(1 of 4)
Dial Line Configuration Options
Modulation: V34
Nxt V34 V32bis/terbo V21/V22/BELL
Modulation determines the modem’
s primary dial modulation group: V.34; V.32bis and V.32
terbo
; or V.21, V.22bis, V
.22,
Bell 212A, and Bell 103J.
The factory default is V34 (V.34 modulations).
Dial LineRate: 28800(V34)
Nxt 28800(V34) 33600 31200 26400(V34) 24000(V34)
21600(V34) 19200(V34) 16800(V34) 14400(V34) 12000(V34) 9600(V34) 7200(V34) 4800(V34) 2400(V34)
- OR -
Nxt 19200(V32t) 16800(V32t) 14400(V32b) 12000(V32b) 9600(V32b) 7200(V32b) 4800(V32b)
- OR -
Nxt 2400(V22bis) 1200(V22) 1200(212A) 0–300(V21) 0–300(103J)
Dial Line Rate. This configuration option determines the modem’s data rate and modulation scheme for operation on dial
lines. Online changes do not take effect until a disconnect occurs. Dial Line Rate sets the upper limit rate and
modulation; lower speed connections may still be possible.
What Dial Line Rate configuration options are displayed depends the setting of Modulation.
28800(V34), 33600, 31200, 26400(V34), 24000(V34), 21600(V34), 19200(V34), 16800(V34), 14400(V34), 12000(V34),
9600(V34), 7200(V34), 4800(V34) – The modem operates using V.34 modulation at the data rate selected. The modem
can be forced by the remote modem to a lower data rate. Note that if Automode is enabled and Dial Line Rate is set to
V.34, the modem can connect in a non-V.34 modulation. However, if Dial Line Rate is not set to V.34, it cannot be
Automoded to V.34. The 33,600 and 31,200 bps rates are Paradyne extensions of the CCITT V.34 recommendation.
19200(V32t), 16800(V32t), 14400(V32b), 12000(V32b), 9600(V32b), 7200(V32b), 4800(V32b) – The modem operates
using V.32
terbo
, V.32bis, or V.32 modulation at the data rate selected. The modem can be forced by the remote modem
to a lower data rate.
2400(V22bis), 1200(V22), 1200(212A) – Modem operates using the modulation and data rate selected.
0–300(V21), 0–300(103J) – Modem operates in full-duplex, Asynchronous mode. These data rates do not support V.42
or MNPr error control.
The factory default is 28800(V34).
AT command equivalent is S-register S41=
n.